Verified · CFD validation service
See the airbefore it’s built.
Verified is EffectiV’s computational fluid dynamics (CFD) service. We recreate your room in 3D, simulate it under its real operating conditions and deliver a report that shows how the air behaves everywhere: velocity, temperature, comfort and air quality.
- ASHRAE 62.1-2022
- Simulation method
- 6 results
- Everywhere in the room
- Energy comparison
- Reported per ASHRAE 105 principles
What the report shows
One room. Six results.
Every report maps six quantities everywhere in the room, from several angles. Not an average, not a single sensor: the whole volume.
01 / 06
Air velocity
Where the air goes, and how fast.
Streamlines follow the air from each diffuser to the return; sections show the velocity in the occupied zone. You see the jets that hold the ceiling, the drafts and the dead zones.
How a study runs
From your drawings to a report.
- 01
Your room in 3D
We recreate the room: dimensions, diffusers and returns, windows, occupants and furniture, where they really are.
- 02
Your operating conditions
You tell us what to simulate: VAV in heating and cooling, outdoor and supply temperatures, setpoints. Each condition is a full simulation.
- 03
The simulation
The conditions match how the room really operates, occupancy and humidity included, following the method proposed in ASHRAE 62.1-2022.
- 04
The report
Velocity, temperature, mean age of air, PMV/PPD, CO2 and Ez factor everywhere in the room, with views from different angles.
A classroom · air velocity
The ceiling works. The bottom of the room sleeps.
Air velocity streamlines: the jets spread along the ceiling while the lower half of the room, where the students sit, barely moves. The kind of thing a simulation shows before it is built.
Energy efficiency analysis
Two simulations. One comparison.
For projects targeting LEED, WELL or other certifications, Verified applies a comparative method developed by EffectiV: two room simulations, your design and a normalized reference design, under the same operating conditions. Results are reported and compared consistently with the principles of ASHRAE Standard 105-2021.
EffectiV
Your design
With high-performance diffusers.
Normalized baseline
The normalized design
With commonly used diffusers.
Thermal: airflow to hold the setpoint
With VAV, the supply airflow each design needs to hold the setpoint in the occupied zone, in heating and in cooling. With constant volume, the supply temperature each design needs instead. This is where stratification and the quality of mixing in the occupied zone show up.
Ventilation: outdoor air to condition
Each design’s Ez, taken from its own simulation. Under ASHRAE 62.1, Voz = Vbz / Ez: for the same breathing-zone requirement, the design with the lower Ez needs more outdoor air to be conditioned.
The report also compares the impact on thermal comfort and indoor air quality.
Scope: a room-level comparison of these two terms, reported as the difference in airflow (or supply temperature) and in Ez between the two designs, not as annual energy use, and not whole-building energy modeling. The results can feed a whole-building energy model or the energy modeler’s analysis.
Examples
See what a report looks like.
Why it matters
Diffusers matter more than they get credit for.
Air mixing affects energy efficiency, indoor air quality and thermal comfort like no other component of the system. With Verified, that impact can be quantified, and a design validated before it is installed.
Validate the design before it is built.
Send us your drawings and operating conditions: we will scope the study with you.
SelectiV · Verified
Designing a room? Start with the air.
Use SelectiV to lay out diffusers in 3D, or ask for a Verified CFD study to validate comfort, IAQ and energy before anything is installed.